21011528

素因数分解:

$2^3\times {\mathrm{191}}^1\times {\mathrm{13751}}^1$

素因数の和:13948

約数の個数: 16

約数和(自身を含む): 39605760

約数和(自身を除く): 18594232

約数列:

[1, 2, 4, 8, 191, 382, 764, 1528, 13751, 27502, 55004, 110008, 2626441, 5252882, 10505764, 21011528]

約数ペア:

[(1, 21011528), (2, 10505764), (4, 5252882), (8, 2626441), (191, 110008), (382, 55004), (764, 27502), (1528, 13751)]